William N. May, M.D.
NPI 1700841046ActiveIndividual· Ophthalmology· Loma Linda, CA
Ophthalmology (M.D.) in Loma Linda, California, trained at University of California, Davis School of Medicine (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $164,912 for 736 claims, against $73,171 paid for services in 2024. Amgen Inc. was the largest of 8 companies reporting payments in 2025, $976.87 in all, mostly food and beverage.
Overview
| NPI | 1700841046 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 19, 2006 |
| Last updated in NPPES | Dec 19, 2024 |
| Certified by provider | Dec 19, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | G56891 | CA |
| Ophthalmology | 207W00000X | 18490 | NV |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (CA); Practitioner - Ophthalmology (NV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 466 |
|---|---|
| Services billed | 911 across 25 procedure codes |
| Paid by Medicare | $73,171 |
Part D prescriptions in 2024
| Prescriptions (claims) | 736 · 1,149 30-day fills |
|---|---|
| Patients | 212 |
| Total drug cost | $164,912 |
| Generic share | 45% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Ophthalmology |
Medical groups
- Faculty Physicians and Surgeons of LlusmLoma Linda, CA · 1,315 clinicians
- Sac Health SystemSan Bernardino, CA · 227 clinicians
Hospital affiliations
- Loma Linda University Medical CenterLoma Linda, CA
- Riverside University Health System-Medical CenterMoreno Valley, CA
Industry payments (Open Payments)
- 2025$976.87 · 17 payments from 8 companies
- 2024$952.96 · 19 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $293.20 | 5 |
| Dompe US, Inc. | $216.87 | 4 |
| Biotissue Holdings Inc. | $134.42 | 1 |
| Bausch & Lomb Americas Inc. | $124.99 | 1 |
| Alcon Vision LLC | $90.49 | 2 |
What the 2025 payments were for
- Food and Beverage$976.87 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 40 ophthalmologists in Loma Linda · All ophthalmologists in California